Four stroke concentric oscillating rotary vane internal combustion engine

Abstract

The four stroke concentric oscillating rotary vane internal combustion engine performs the four stroke Otto cycle inside four arcuate combustion chambers formed between the shell, rotor cylinder and two transverse end plates analogous to the engine cylinder; two fixed diametrically opposed vanes inwardly projecting from the shell serving as cylinder heads; and two fixed diametrically opposed vanes projecting outwardly from the rotor cylinder functioning as pistons. An output shaft mechanism orchestrates the synchronized operations of the fuel injection and spark ignition systems, pair of cranking mechanisms controlling the rotary strokes of the rotor, and pair of forced porting mechanisms forcing the complete removal of combustion byproducts from and sufficient supply of air into the combustion chambers.

What is claimed as new is: 
     
       1. A four stroke concentric oscillating rotary vane internal combustion engine made up of a pair of cranking mechanisms, a pair of forced porting mechanisms, an output shaft mechanism, a stator, a rotor, four arcuate combustion chambers and longitudinal and transverse grooves for lubrication and dynamic sealing, in which: a. said pair of cranking mechanisms control the oscillating rotary motion of the rotor, each cranking mechanism comprising: i. a pair of parallel and coaxial cylindrical discs,   ii. an eccentric pin connecting rigidly said pair of discs with each other,   iii. a gear coaxially and integrally connected to the front disc,   iv. a pair of axially opposed journals coaxially and outwardly projecting from the rear disc and said gear, and   v. a connecting rod pivotally connected to said disc pin at one end;     b. said pair of forced porting mechanisms control the forced porting of air into and combustion byproducts from the combustion chambers, each forced porting mechanism comprising: i. a hollow tube divided by a transverse wall into an air duct in front and an exhaust duct in the rear,   ii. an exhaust inlet adjacent said transverse dividing wall and in said exhaust duct measuring 45 degrees from edge to edge of the inlet on the outer circumference of said exhaust duct,   iii. an air outlet adjacent said transverse dividing wall and in said air duct measuring 45 degrees from edge to edge of the outlet and lagging behind by 45 degrees in the direction of rotation of the hollow tube from said exhaust inlet from edge to edge as reckoned on the outer circumference of said air duct,   iv. a gear integrally connected with said hollow tube,   v. an axial flow fan connected to the front end of the air duct and supplying slightly pressurized air into the combustion chambers, and   vi. a radial flow exhaust fan connected to the rear end of said exhaust duct and extracting combustion byproducts from the combustion chambers;     c. said output shaft mechanism orchestrating and coordinating the synchronized iterative operations of said cranking mechanisms, said forced porting mechanisms, a fuel injection system and a spark ignition system, comprising: i. a main shaft providing brake power output in the front and rear of the engine,   ii. a big gear keyed to said main shaft and enmeshed with said cranking gears and porting gears at gear ratios of 2:1 and 1:1, respectively,   iii. a pair of auxilliary shafts driving the fuel injection and spark ignition systems,   iv. a pair of gears coaxially and integrally connected to said auxilliary shafts,   v. a pair of journals coaxially projecting from said gears of the auxilliary shafts, and   vi. a small gear keyed to said main shaft and enmeshed with said gears of the auxilliary shafts at a gear ratio of 1:1;     d. said stator having three compartments, namely, a working chamber in the middle, a crankcase in the front and a gear box in the rear, i. said working chamber comprises:     
     
     
       1. a shell with a right circular cylindrical internal surface, 2. a pair of diametrically opposed stator vanes with concave axial edges coaxially and inwardly projecting from said shell,   3. front and rear transverse end plates,   4. a pair of longitudinal cylindrical holes for journalling the two hollow tubes of the forced porting mechanisms in said stator vanes,   5. a pair of diagonal air inlets, one in each stator vane, with identical diameter and relative axial location as those of the air outlets of said forced porting mechanisms, and   6. a pair of diagonal exhaust outlets, one in each stator vane, with identical dimensions and relative transverse location as those of said air inlets of the stator vanes, as well as with identical diameter and relative axial location as those of said exhaust inlets of the forced porting mechanisms;   ii. said crankcase comprises: 1. a crank case body which is recessed to accommodate the cranking mechanisms, the big gear of the main shaft, the porting gears and lubricating oil,   2. a central longitudinal bore with gas seal and anti-friction bearing in said crankcase body,   3. a pair of longitudinal blind holes with anti-friction bearings in said crankcase body for journalling the rear journals of the cranking mechanisms,   4. a crank case cover plate,   5. a pair of longitudinal blind holes with anti-friction bearings in the crankcase cover plate for journalling the front journals of the cranking mechanisms, and   6. three longitudinal holes with anti-friction bearings and oil seals in said crank case cover plate for journalling the hollow tubes and the main shaft;     iii. said gear box comprises: 1. a gear box body which is recessed to accommodate the small gear of the main shaft, the gears of the auxilliary shafts and lubricating oil,   2. a central longitudinal bore with gas seal and anti-friction bearing in said gear box body,   3. a pair of longitudinal blind holes with anti-friction bearings in said gear box body for journalling the gears of the auxilliary shafts,   4. a gear box cover plate,   5. a pair of longitudinal holes with anti-friction-bearings and oil seals in the gear box cover plate for journalling the auxilliary shafts, and   6. three longitudinal holes with anti-friction bearings and oil seals in the gear box cover plate for journalling the hollow tubes and the main shaft;     e. a rotor coaxially and rotatably mounted in said working chamber of said stator having i. a right circular cylinder journalled for rotation between the concave axial edges of the stator vanes,   ii. a pair of diametrically opposed rotor vanes with convex axial edges outwardly projecting from said rotor cylinder and journalled for axial rotation in the shell cylinder,   iii. a pair of axially opposed journals coaxially and outwardly projecting from said rotor cylinder as well as journalled for axial rotation in said central longitudinal bores of the crankcase body and gear box body,   iv. a central axial hole with sleeve bearing for journalling the main shaft, and   v. a pair of diametrically opposed axial pins which are equidistant from the axis and axially projecting from transverse face of the front rotor journal, each pin being journalled in the other end of the connecting rod of the cranking mechanism;     f. said four arcuate combustion chambers are each bounded by: i. the right circular cylindrical internal surface of the shell, the rotor cylinder and the transverse end plates functioning as engine cylinder,   ii. the two stator vanes serving as cylinder heads, and   iii. the two adjacent rotor vanes corresponding to pistons; and     g. longitudinal grooves in the concave axial edges of the stator vanes and convex axial edges of the rotor vanes as well as transverse grooves in plane radial edges of the rotor vanes containing hot air and gases serving as lubricant and dynamic seals.